注意時間!用python制作倒計時提醒工具
長時間的久坐容易疲勞，也容易腰背部肌肉容易受損，平時工作學習的時候我們應該時不時的起來活動一會，不如就用python制作個簡單的倒計時提醒工具吧。
一、導入所需的模塊
from?tkinter import?*
import?time
from?playsound import?playsoundtkinter用來制作圖形界面，time模塊用來顯示計算時間，playsound模塊用來設置提示音。
二、利用tkinter制作窗口
root = Tk()
root.geometry('400x300')
root.resizable(0,0)
root.title('倒計時')
root.mainloop()
TK()：初始化窗口
geometry()：設置窗口的大小
resizable()：鎖定窗口大小
title()：窗口標題
mainloop()：始終顯示窗口
三、創(chuàng)建當前時間
在窗口內(nèi)創(chuàng)建一個標簽 用來提示當前時間
Label(root, font ='arial 15 bold ', text = '當前時間:', bg = 'Pink').place(x = 40?,y = 70)
font：字體參數(shù)
text：要顯示的文本
bg：標簽的背景顏色
place()：標簽的坐標位置
顯示當前時間
def?clock():
????clock_time = time.strftime('%H:%M:%S %p')
????curr_time.config(text = clock_time)
????curr_time.after(1000,clock)
curr_time =Label(root, font ='arial 15 bold', text = ''?, bg ='pink')
curr_time.place(x = 190?, y = 70)
clock()
strftime()：用來格式化輸出時間，%H為24小時制小時數(shù),%M為分鐘數(shù),%s為秒數(shù),%p用來提示a.m或p.m。
after()：設置1秒的時間更新。
四、實現(xiàn)倒計時功能
創(chuàng)建倒計時的輸入框
sec = StringVar()
Entry(root, textvariable = sec, width = 2, font = 'arial 12').place(x=250, y=155)
sec.set('00')
mins= StringVar()
Entry(root, textvariable = mins, width =2, font = 'arial 12').place(x=225, y=155)
mins.set('00')
hrs= StringVar()
Entry(root, textvariable = hrs, width =2, font = 'arial 12').place(x=200, y=155)
hrs.set('00')sec，mins，hrs：存儲秒，分，小時的字符串變量
Entry()：創(chuàng)建文本輸入框
textvariable：和一個特定變量綁定
倒計時功能
def?countdown():
????times = int(hrs.get())*3600+ int(mins.get())*60?+ int(sec.get())
????while?times > -1:
????????minute,second = (times // 60?, times % 60)
????????
????????hour = 0
????????if?minute > 60:
????????????hour , minute = (minute // 60?, minute % 60)
??????
????????sec.set(second)
????????mins.set(minute)
????????hrs.set(hour)
???
????????root.update()
????????time.sleep(1)
????????if(times == 0):
????????????playsound('Loud_Alarm_Clock_Buzzer.mp3')
????????????sec.set('00')
????????????mins.set('00')
????????????hrs.set('00')
????????times -= 1time變量獲取總時間（小時*3600+分鐘*60+秒數(shù)），time大于-1時，倒計時執(zhí)行，當time=0時，調(diào)用提示音(同目錄下的聲音文件)。
補上倒計時前的標簽
Label(root, font ='arial 15 bold', text = '倒計時：', bg ='pink').place(x = 40?,y = 150)
五、創(chuàng)建一個按鈕，啟用倒計時
Button(root, text='START', bd ='10', command = countdown, bg = 'pink', font = 'arial 10 bold').place(x=150, y=210)command：點擊按鈕時，調(diào)用上面編寫好的倒計時函數(shù)
六、完整代碼
講解都在上面嘍，就不寫注釋啦
from?tkinter import?*
import?time
from?playsound import?playsound
root = Tk()
root.geometry('400x300')
root.resizable(0,0)
root.title('倒計時')
Label(root, font ='arial 15 bold ', text = '當前時間:', bg = 'Pink').place(x = 40?,y = 70)
def?clock():
????clock_time = time.strftime('%H:%M:%S %p')
????curr_time.config(text = clock_time)
????curr_time.after(1000,clock)
curr_time =Label(root, font ='arial 15 bold', text = ''?, bg ='pink')
curr_time.place(x = 190?, y = 70)
clock()
Label(root, font ='arial 15 bold', text = '倒計時', bg ='pink').place(x = 40?,y = 150)
sec = StringVar()
Entry(root, textvariable = sec, width = 2, font = 'arial 12').place(x=250, y=155)
sec.set('00')
mins= StringVar()
Entry(root, textvariable = mins, width =2, font = 'arial 12').place(x=225, y=155)
mins.set('00')
hrs= StringVar()
Entry(root, textvariable = hrs, width =2, font = 'arial 12').place(x=200, y=155)
hrs.set('00')
def?countdown():
????times = int(hrs.get())*3600+ int(mins.get())*60?+ int(sec.get())
????while?times > -1:
????????minute,second = (times // 60?, times % 60)
????????
????????hour = 0
????????if?minute > 60:
????????????hour , minute = (minute // 60?, minute % 60)
??????
????????sec.set(second)
????????mins.set(minute)
????????hrs.set(hour)
???
????????root.update()
????????time.sleep(1)
????????if(times == 0):
????????????playsound('Loud_Alarm_Clock_Buzzer.mp3')
????????????sec.set('00')
????????????mins.set('00')
????????????hrs.set('00')
????????times -= 1
Label(root, font ='arial 15 bold', text = '倒計時：', bg ='pink').place(x = 40?,y = 150)
Button(root, text='START', bd ='10', command = countdown, bg = 'pink', font = 'arial 10 bold').place(x=150, y=210)
?
root.mainloop()
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